No Problem, I too was hesitant, but the thing is, if it interests you and you have the money, I say go for it. Setting up one of these gets to be really, really quick once you get the hang of it, but you won't until you make the plunge and buy one. I myself am waiting for the Zenisis II
A standard digital multimeter: Make your coil. Set your meter to Ohms and connect one lead to to one end of the coil and the other lead other to the other end. The display shows your resistance.
I use my Zmax V2 to check resistance. It has built in circuitry to shut off if there is a short detected. I don't trust it though, so I make sure when I wrap my coil on the AGA that both ends of the coil are firmly in place and not touching anything else before I check resistance. A 3/4 wrap will give me 1.7 ohms and a 4/5 will give me 2.2 ohms. I adjust based on the PG/VG/VG-only juice I will be using. The mesh can tear since it softens, so I just unroll and re-roll very carefully.